Incandescent gas-light.



No. 725,199. PATENTED APR. 14, 1903.

G. S. BAEROWS.

INOANDESCENT GAS LIGHT. APPLICATION FILED MAY 26, 1896.

,NO MODEL.

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G. S. BARROWS. INGANDESGENT GAS LIGHT.

APPLICATION FILED MAY 26, 1896.

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GEORGE S. BARROlVS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO VELSBAOH LIGHT COMPANY, OF GLOUCESTER CITY, NEW JERSEY, A

CORPORATION OF NElV JERSEY.

incanoascsnr GAS LlGHT.

SPECIFICATION forming part of LettersPatent No. 725,199, dated April 14, 1903.

Application filed May 26, 1896.

To fbZZ 7071/0771, it ntay concern:

Be it known that I, GEORGE S. BARRoWs, a: citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain newand useful Improvements in Incandescent Gas-Lights, of which the following is a specification.

Hitherto it has been customary in such IO lights to suspend the mantle over the burner by means of a doubled metallic wire, as platinum, the strands of which are separated and threaded or otherwise secured to the top of the mantle. These strands are then twisted together, so as to project laterally from the top of the mantle and are rigidly attached to diametrically opposite points on a ring bent or formed at the upper end of a rod, post, or support Which is usually disposed vertically,

with its ring arranged horizontally and at right angles to its shank. However, such an arrangement presents well recognized defects, disadvantages, and objectionable features. The earthy oXids or mineral sub-;

2.5 stances or materials constituting the mantle are fragile and expand and contract when exposed to the effects of heat and cold due to ignition and extinguishment of the burner at: a different rate from the metallic suspension- 0 Wire and support-ring, so that due to this dif-- ference in rate of contraction and expansion between the constituents of the mantle and" metal of the suspension --wire and supportring stresses, strains, and the like are in-. duced, Which tend to the destruction of the mantle. The location of the suspension-wire above the burner results in its being exposed. to considerable heat. Consequently itis usually made of platinum, whichis exceedingly expensive. Furthermore, since the end portions of the suspension-wire that project laterally from the mantle are twisted it follows that their intermediate portion tends to assume an elliptical form, and thus contract the mouth of the mantle and retard the escape of the products of combustion which arise from the chimney through the mantle. For the production of the best results itis important that the vertical axis of the mantle should coincide with the correspondingaxis Serial No. 593,146. (No model) of the burner; to the end that the flame may be properly applied to the mantle. This result was not heretofore possible of attainment without comparatively great expenditure for skilled labor because of the difficulties presentedin attaching the ends of the suspension-wire to the support-ring in proper position for accomplishing this result and because -when once attached there were no provisions to its ultimate destruction and breakage.

The principal objects of my present inven tion are, first, to obviate the defects and disadvantages hitherto encountered and some of which have been above mentioned and to provide simple, eiiicient, sightly, durable, and comparatively inexpensive means for suspending a mantle from its support in such manner that it is protected from shocks, jars, vibrations, and the like; second, to provide for the free escape of the products of combustion through the top or mouth of the mantie and to prevent undue heating of the mantle-support, and, third, to facilitate the attachment, detachment, and alinement of the mantle.

My invention consists of the improvements hereinafter described and claimed.

The nature, characteristic features, and

scope of my invention will be more fully understood from the following description,taken in connection With the accompanying drawings, forming part hereof, and in which Figure 1 is a side elevational view illustrating a modification of my-invention and showing a mantle provided at its top with a bail or loop, a support, and a link interposed between the bail and support. Fig. 2 is a perspective view drawn to an enlarged scale in order to illustrate certain of the parts shown in Fig. 1.- Figs. 3 and 4: are similar Views illustrating modifications of the link 3 I00 and Figs. 5, 6, and 7 are detached views drawn to an enlarged scale and showing one of many ways of making the links illustrated in the other figures.

In the drawings, a is a mantle, for example, of the W'elsbach type, which is composed of earthy oxids or mineral substances that are quite fragile in their nature. The mantle at its top is provided with a loop or bail b, which ranges across the opening or mouth in a substantially diametral direction. This bail or loop I) is or may be secured to the top of the mantle by running a partcof it through the mantle, or the part 0 may obviously comprise a separate thread run through the top of the mantle and attached to the ends of the bail or loop. The bail or loop I) may of course be composed of any one of a variety of heatresisting materials. However, I may state that I have attained good results in practice by making it of asbestos. The employment of a bail or loop is advantageous because it may be constructed of a material that expands and contracts under the influences of heat and cold in substantial accord with the material of the mantle, because it permits the mouth of the mantle to remain open in circular form for the escape of the products of combustion, because it permits of convenient attachment, detachment, and alinement of the mantle, and because it constitutes, in connection with the link hereinafter described, a pivotal or yielding connection adapted to compensate for shocks and jars.

dis a rod, post, or support provided with a hook for the reception of the bail or loop I). As illustrated in the drawings, this rod, post, or support d is made to conform, as at d, to the contour or outline of the mantle. It must be distinctly understood that my invention is not limited to a rod, post, or sup port in any particular shape; but the form of support d is in some instances advantageous because it presents no sharp curves to the hotter portions of the flame, it being understood that sharp curves when exposed to a comparatively high degree of heat are likely to yield and bend unduly.

Between the hookfand bail or loop I may interpose a link pivotally connected with the bail or loop and adapted for detachable and pivotal connection with the hook.

It is apparent that in the construction last above referred to the mantle and support are connected at two pivotal points, whereof one is designated 9 and the other 71.

By the above-described arrangements vibrations imparted to the support, post, or rod d are compensated for and taken up, so that the mantle is protected from breakage and inury.

The link above referred to may comprise a ring, as shown in Fig. 3, two interlocking rings, as shown in Fig. 4, or even a spiral, as shown in Fig. 5, A ring adapted for use, as

the above-described link, may be constructed by doubling a piece of suitable fine cord or strandfor example, of asbestos, as shown at jin Fig. 6then twisting its ends together and finally tying them through the part Two such rings may be made and connected together something like the numeral 8,as shown in Fig. 7, or the twisted ends may be wound spirally,as shown in Fig.8,and bent at one end to form a hook, as 712, for the mantle and tied at the other end to form an eye, as Z, for the hook or crotch f of the support. However, it will be obvious that the precise manner in which the rings are formed is not an essential part of my invention.

In shipping the mantles in small cylindrical boxes the bail or loop or the link affords convenient means through which a string may be run, and the ends of the string are secured to the sides of the box to keep the mantle oif the bottom thereof, and this string also affords convenient means for taking the mantle out of the box.

It will be obvious to those skilled in the art to which my invention appertains that modifications may be made in details without departing from the spirit thereof, Hence I do not limit myself to the precise construction and arrangement of parts hereinabove set forth, and illustrated in the accompanying drawings; but,

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an incandescent gas-light fixture, the combination of a mantle, a bail or loop extending across its upper end, a support for the mantle, and a loosely-pivoted link interposed between the support and the bail and forming a plurality of pivotal suspensionpoints for the mantle.

2. In an incandescent gas-light fixture, the combination of a mantle, a bail or loop extending across its upper end, a support for the mantle, and a suspending connection interposed between the support and the bail and forming a plurality of pivotal suspension-points between the mantle and the support.

3. In an incandescent gas-light fixture, the combination of a mantle, an asbestos bail or loop extending across its upper end and connected thereto by running a thread of the same material as the bail around the neck of the mantle, a support for the mantle, and an asbestos link interposed between the bail and the support and pivotally connected to each, so as to provide a plurality of pivotal suspension-points for the mantle.

In testimony whereof I have hereunto signed my name.

GEORGE S. BARROWS.

Witnesses:

F. H. MAOMORRIS, W. J. J AOKSON. 

